Nut and pipe wrench.



No. 892,326. PATENTED JUNE 30, 1908. D. STEWART. NUT AND PIPE WRENCH. ARPLIOATION nun MB. 26. 1904.

n1: nolmls PETERS 6a., waswmcrou. u. c.

UNITED STATES PATENT OFFICE.

DAVID STEWART, OF SCHENECTADY,

NEW YORK, ASSIGNOR TO STEWART WRENCH AND MANUFACTURING COMPANY, OF ALBANY, NEW YORK, A CORPORATION OF NEW YORK.

NUT AND PIPE WRENCH.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed February 26, 1904. Serial No. 195,338.

To all whom it may concern:

Be it known that 1, DAVID STEWART, a subject of the United Kingdom of Great Britain and Ireland, residing at N o. 122 North College street, in the city of Schenectady, in the county of Schenectady, in the State of New York, United States of America, have invented a certain new and useful Improvement in Nut and Pipe l/Vrenches, of which the following is a specification, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of my invention is to provide a nut or pipe wrench of the rock-jaw-type of a single and chea form of construction, so made as to be of fight weight, and with great variability of jaw-width, yet of exceeding compactness, and easily and quickly changed as to aw-width by one hand.

To such ends my invention consists in substance of a slide-bar and handle-piece formed in one piece provided at one end with a jaw-head usually corrugated to grip the nut or pipe, a slide-piece or sleeve usually split and sprung upon the slide-bar thereon, a aw-piece having a aw-head similar to the j awhead of the slide-bar pivoted to the slidepiece or sleeve, a screw-threaded passage through the slide-piece or sleeve in alinement with a plain screw-passage formed by abutting grooves on the slidebar and jawpiece, an adjusting-screw working in the threaded passage of the slide-piece or sleeve having a thumb-nut lying in a slot formed below two side-prongs at the u per end of the handle piece ortion of the s ide-bar and handle, two chee s or rongs forming exten sions of the slide-bar andle-jaw extendin backward one on either side of the pivoted jaw-piece to prevent side motion thereof, and a spring located at the heel of the pivoted j aw-piece adjacent to the pivot and normally forcing the heel away from the slide piece or sleeve, for forcing the free end of the jawpiece toward the slide-bar aw-head; although it is not to be understood that the invention is necessarily limited to a device comprising at once all of the elements before enu- ,merated, as the same consists in the particular construction of certain devices and parts, and the particular construction, combination and arrangement of certain devices and parts, all as hereinafter more particularly set forth in the specification, and pointed out in the claims.

My said invention is fully set forth in the following specification of which the accomanying drawing forms a part, wherein simiar numerals of reference designate like or equivalent parts Wherever found throughout the several views, and in which Figure 1 is a side view of one form of my improved wrench, a portion of the construction thereof being shown in dotted lines; Fig. 2 is a like view of a substantially similar form of such wrench, a portion thereof being shown in longitudinal section in order to better show the construction; Fig. 3 is a detail view in perspective of the form of sliding piece or sleeve shown in Fig. 1 Fi 4 is a View similar to Fig. 3 of the particular form of split sliding-piece or sleeve shown in Fig. 2, as tie same appears when ready to be slip ed upon the slide-bar and before the same as been swaged so as to close the slit, and Fig. 5 is a like view of a slide-piece or sleeve similar to that shown in Fig. 4 differing therefrom only in the fact that the same is split through the front wall as well as through the rear wall and has a securing screw or rivet assing through the front as well as through t 1e rear portion thereof.

Referring to the drawin :-The reference numeral 11 designates a s ide-bar provided at one end with the handle 12, preferably formed integral therewith, at the junction of which handle and slide-bar is located on the rear side two prongs 13, leaving between them an open-ended slot in which rests the adjusting screw 14 the milledactuatingthumb-nut 15 of which rests in a thumb-nutslot 15 formed in the handle 12 immediately below the prongs 13, and usually formed in tegral with the slide-bar 11 at the end is the enlarged j aw-head 16, usually provided with the serrations or teeth 17 in order to better grip the nut or pipe, which aw-head has extending therefrom in the same direction as do the prongs 13, the aw-hcadprongs 18 which extend over the bar 19 of the pivoted jawpiece 20 which is provided with the enlarged j aw-head 21 coacting with the jaw-head 16, and like it providedwith serrations or teeth 17.

Sliding easily up and down the slide-bar 11 is the slide-piece or sleeve 21, which is for the sake of lightness usually provided with the perforations 22, and the rear side wall of the slideway 23 of which is usually roundedas shown at 24, of Fig. 3 so as to fit into the semi-circular cavity or groove 24 formed in the rear edge of the slide-bar 11, as shown in dotted lines in Fig. 1, a like cavity or groove 25 being also usually formed in the front .edge of the bar 19 of the pivoted jaw-piece 20. In some cases however one or both grooves 24 and'2'5 may be omitted, and in such case the slide-bar cavity of the slide-piece or sleeve 21 is made rectangular throughout as shown in Fig. 4, instead of being provided with a conveXly curved rear wall as in the form shown in Fig. 3.

The pivotapoint upon which the jaw-piece 20 rocks consists of a pin or bolt 26, which maybe formed with a screw-thread upon a portion thereof and a slotted head .27 as shown in Fig. 1, so as to beeasily removable, or may be in the form of a plain pin riveted down or upset at theends, and suchpivot pin or bolt 26 of'whatever form passes through the two side wings 27 of the pivoted-j aw-pie ce 20 the roundedforward ends of'which wings fit into similarly shaped sockets in the slidepiece or sleeve 21., the rocking movement of the jaw-piece on its pivot-pin being limited .by the contact of the square rear bottomportion 28 thereof with the flat upper face of the rear bottom shelf 29 of theslide-piece, when moved in the loosening or non-working direction, and by the 'meeting-of the abutting fiat faces 30 of the slide-piece or sleeve and 3.1 of the jaw-piece, when moved in the working direction so as to grip the nut or pipe.

Formed in and through the central portion of the slide-piece or sleeve 21 is vathreaded adjusting-screw hole 32 in which rests and rotates, so as to slide such slide-piece up and down the slide-bar 11, the adjusting-screw 14, and, as the main portion of the strain when the wrench is operated comes not on' bolt or pin 26 but on the abuttingsquaresun faces 30 and 31, a very small pin or bolt may be used.

The slide-bar 11 is usually provided on its rear side with a longitudinal roundedgroove, and the aw-piece 21, being provided on its .front or abutting edge with a similar groove, when the parts are assembled, as shown in Fig. 1, such grooves form acylindrical chamber or cavity in which rests the adjusting screw 14, which is by this construction protected from dirt and injury, while at the .same timegreat compactness is secured.

When the enlarged jaw-head upon the upper end of the slide-bar 11 is formed integral therewith, as shown in Fig. 2 the sleeve is split upon the rear side at the center, and is formed by drop-forging or other means into the form shown in Fig. 4, and after being slipped upon the slide-bar 11 it is then swaged into the closedposition, and the rear lower part pins firmly secured together at the split by a suitable rivet 28,- the adjusting screw 11 having been of course first placed in proper position to have the screw thereof located in the threaded cavity of the sleeve when this operation is finished.

Instead of merely splitting the slide-piece or sleeve 21 through the rear walls and the adjusting screw-hole or cavity as shown in Figs. 2 and 4, in some cases such sleeve may be also split through the front wall, as shown at 10 in Fig. 5,.in such manner that the sleeve 21 is formed in two separate parts, which are in such case rigidly secured together in position upon the slide-bar and adjusting-screw by means of suitable screwf'bolts or rivets 28 and 28 and passing through the same at the front and rear as shown in said Fig. 5. In like manner, in some cases while the split at the rear is omitted such sleeve may be split only at the forward side thereof as shown at 10 in said Fig. 5.

Formed in the heel of the pivoted jawpiece is a cavity 39 adapted .to receive a spring 40, usually of the spiral or helical form shown, which by pressure exerted againstthe upper face of the rear extension of the slide-piece or sleeve 14, serves to'normally'force the pivoted-j aw forward and into the clamping'or working position.

When the slide-bar-jaw-head 16, is made removable and is secured to the slide-bar 11 by a rivet or screw bolt 30, as shown in dotted lines in Fig. 1, the same is firmly seated in place uponthe bar 1 1, upon a shoulder 31, and the pivot-pin or bolt 26, being also made ofscrewform, it will be seen that by removing these two screws the wrench may be at any time quickly and easily separated into its component parts for the purpose of repairing or renewing any of such parts that vmay have become worn or damaged, and the parts afterwards as quickly and as easily re Pl21.06ClOI"I-G116W8(l, as .mayalso be done in the split sleeve form shown in Fig. 5 when the 28 and28 .are made easily removableby being of screw or other suitable form.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent is 1. 'In-a wrench, a slide-bar having an integral handle-piece, .a lower jaw-head at the end of the slide-bar, a pivoted jaw-piece havslide-piece or sleeve, and means for preventing longitudinal movement of the adjusting screw.

2. In a wrench, a slide-bar having an integral handle-piece, a lower jaw-head carried by the slide-bar, a pivoted jaw-piece having an upper aw-head coacting with the lower j aw-head to form. a nut or pipe-throat, prongs extending rearward from the two sides of the slidebar jaw-head so as to extend over the bar of the pivoted jaw-piece, a slide-piece or sleeve sliding on the slide-bar to which the pivoted jaw-piece is pivoted, an adjusting screw working in a thread in the slide-piece or sleeve and lying in the space between the slide-bar and the jaw-piece, and such jawpiece being provided with a grooved inner edge to form a semi-cylindrical cavity for the reception of the adjusting screw the rear side of the abutting face of the slide-bar being flat, and means located at the heel of the pivoted jaw- )ieee for forcing such heel away from the slide-piece or sleeve.

3. In a wrench, a slide-bar having an integral handle-piece, a lower jaw-head at the end of the slide-bar, a slide-piece or sleeve sliding on the slide-bar, a jaw-piece pivoted to the slide-piece or sleeve, having an upper jawehead, an adjusting screw working in a thread in the slide-piece or sleeve and lying in the space between the slide-bar and the jaw-piece, means located at the heel of the pivoted jaw-piece for forcing such heel away from the slide-piece or sleeve, and means for preventing longitudinal movement of the adjusting screw.

4. In a wrench, a slide-bar having an in tegral handle-piece and a lower jaw-head, a slide-piece or sleeve sliding on the slide-bar having a split central fin on the rear side flanked on either side by a recess rounded at the forward end, means for securing the abutting split portions of the sleeve firmly together, a jaw-piece having an upper jawhead adapted to coact with the jaw-head of the slide-bar provided at the bottom with side-wings fitting into the recesses of the slidepiece or sleeve so as to rock slightly therein, a pivot-pin or bolt securing the jawpiece to the slide-piece or sleeve, means located at the heel of the pivoted jaw-piece for forcing such heel away from the slide-piece or sleeve, )rongs extending rearward from two sides of the slide-bar jaw-head so as to extend over the bar of the pivoted aw-piece, and means for adjusting the slide-piece upon the slide-bar.

5. A Wrench having a slide-bar having an integral handle-piece and provided with a lower jaw-head, a pivoted jaw-piece having a coacting' up er jaw-head adapted to be reciprocated a ong the slide-bar, means for limiting the vibratory movement of the jaw piece upon its pivot, a spring for rocking the pivoted jaw-piece located at the heel thereof adjacent to the pivot, and an adj usting screw lying between the slide-bar andthe pivoted jaw-piece, the inner face of the slidebar being flat and the abutting face of the pivoted jaw-piece being grooved.

6. A wrench having a slide-bar having an integral handle-piece and provided with a lower jaw-head, a pivoted aw-piece having a coacting upper jaw-head adapted to be reciproeated along the slidebar, prongs extending rearward from the two sides of the slide-bar jaw-head so as to extend over the bar of the pivot jaw-piece, means for limiting the vibratory movement of the jaw piece upon its pivot, a spring located in a cavity formed in the heel of the pivoted awpiece adjacent to the pivot normally forcing such heel away from the sleeve, and an adj usting screw lying between the slide-bar and the pivoted aw-piece.

7. A wrench having a slide-bar provided with a removable jaw-head having an outer clutching surface, a second-jaw-heMl having an inner clutching surface adapted to coact with the outer clutching surface of the slidebar jaw-head to form a nut or pipe engaging jaw between them, a removable pivot-pin connecting the second jaw-head with the slide-bar in such manner that the same may be reciprocated on the slide-bar so as to open or close the jaw, such pivoted. connection being always located entirely below the working face of the slide-bar jaw-head, means located adjacent to the pivot for normally forcing the vibrating end of the second awhead toward the slide-bar and an adjusting male screw formed of a separate piece reciprocating the second and pivoted-jaw-head located between the pivotal connection and the slide-bar.

8. A wrench having a slide-bar having an integral handle-piece and provided with a jaw-head, prongs extending rearward from the two sides of the slide-bar jaw-head so as to extend over the bar of the pivoted jawpiece, a pivoted jaw-piece having a coacting head adapted to be reciprocating along the slide-bar, means for limiting the vibratory movement of the jaw-piece upon its pivot, a spring located in a cavity formed in the heel of the pivoted jaw-piece adjacent to the pivot normally forcing such heel away from the sleeve, and an adjusting screw lying between the slide-bar and the pivoted jawpiece.

9. A wrench having a slide-bar having an integral handle-piece and provided with a jaw-head, prongs extending rearward from the two sides of the slide-bar j aw-head so as to extend over the bar of the pivoted jawpiece, a pivoted jaw-piece having a coacting head adapted to be reciprocated along the slide-bar, means for limiting the vibratory movement of the aw-piece upon its pivot, a spring located 1n a cavity formed in the heel of the pivoted j aw-piece and the abutting face of the rear lower extensions of the slide piece adjacent to the pivot normally forcing such heel away from the sleeve, and an adjusting screw lying between the slide barand the pivoted jaw-piece.

10. In a wrench, a slide-bar having a jawhead, a slide-piece or sleeve sliding on the slide-bar having a split central fin on the rear side flanked on either side by a recess rounded at the forward end, means for securing the abutting split portions of the sleeve firmly together, a jaw-piece having a jawhead adapted to coact with the j aw-head of the slide-bar provided at the bottom with side-wings fitting into the recesses of the slide-piece or sleeve so as to rock slightly therein, apivot-pin or bolt securing the awpiece to the slide-piece or sleeve, prongs extending rearward from the two sides of the slide-bar jaw-head so as to extend over the bar of the pivoted aw-piece, and means for adjusting the slide-piece upon the slide-bar.

11. In a wrench, a slide-bar having a jaw head, a slide-piece or sleeve sliding on the slide-bar having a split central fin on the rear side flanked on either side by a recess rounded at the forward end, means for securing the abutting split portions of the sleeve firmly together, a jaw piece having a jaw head adapted to coact with the jaw-head of the slide bar provided at the bottom with side wings fitting into the recesses of the slidepiece or sleeve so as to rock slightly therein, a pivot-pin or bolt securing the jaw-piece to the slide-piece or sleeve, and means for adjusting the slide-piece upon the slide-bar.

12. In a wrench, a slide-bar having a awhead, a slide-piece or sleeve sliding on the slide-bar having a split central fin on the rear side flanked on either side by a recess rounded at the forward end, means for securing the abutting split portions of the sleeve firmly together, a jaw-piece having a jawhead adapted to coact with the j aw-head of the slide-bar provided at the bottom with side-wings fitting into the recesses of the slide-piece or sleeve so as to rock slightly therein, a pivot-pin or bolt securing the j awpiece to the slide-piece or sleeve, means carried by the slide-bar jaw-head for preventing side-play thereof, and means for adjusting the slide-piece upon the slide-bar.

13. In a wrench, a slide-bar having a awhead, a slide-piece or sleeve sliding on the slide-bar, a central fin formed on the rear side of the slide-piece or sleeve flanked on either side by a recess rounded at the forward end, a split longitudinally dividing the slidepiece or sleeve through the fin into twopieces, means for securing the split portions of the sleeve firmly together, a jaw-piece having a aw-head adapted to coact with the jaw-head of the slide-bar provided at the bottom with side-wings fitting into the recesses of the slide-piece or sleeve so as to rock slightly therein, a pivot-pin or bolt securing the jaw-piece to the slide-piece or sleeve, and means for adjusting the slide-piece upon the slide-bar.

14. In a wrench, a slidebar having a jawhead, a slide-piece or sleeve sliding on the slide-bar, a central fin formed on the rear side of the slide-piece or sleeve, flanked on either side by a recess rounded at the forward end, a rearward lower extension or offset extending beyond the upper wall of the rounded recess so as to form a heel, a split longitudinall dividing the slide-piece or sleeve through t e fin into two-pieces, means for securing the split portions of the sleeve firmly together, a j awpiece having a jaw head adapted to coact with the jaw-head of the slide-bar rovided at the bottom with sidewings fitting into the recesses of the slidepiece or sleeve so as to rock slightly therein, and having a heel face abutting against the heel face of the offset of the slide-piece, a pivot-pin or bolt securing the jaw-piece to the slide-piece or sleeve, and a spring located in a cavity normally forcing the heels of the pivoted-jaw-piece and slide-piece apart, and means for adjusting the slide-piece upon the slide-bar.

In testimony whereof I have signed my name .to this specification in the presence of two subscribing witnesses.

DAVID STEWART.

Witnesses:

JOHN C. GRUFE, LESLIE S. ELTING. 

